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I think you have the right one, only the red spot is missing. but i found more picture's of this kind with a orange or yellow spot on the bottom wings.thanks for the ID
Bas, was there any red spots on your butterfly. I have found one that might fit Phoebus Parnassian.
Dan find this specie...last month...!!
Lat: 47.40, Long: 109.38
Spotted on Aug 31, 2010 Submitted on May 14, 2011